JanSport Watchtower Laptop Backpack 305 Polyester Dobby/420 Denier Nylon/630 Denier Nylon/Canvas/Waxed Cotton Twill/Leather Trim Imported One large main compartment, front zippered insulated pocket, side zippered stash pocket, two front gear pockets, and side water bottle pocket Versatile padded sleeve designed to fit a 3L hydration system or a 15" laptop Quick access tricot lined loft pocket, deluxe organizer with padded phone holder, and soft tricot lined tablet pocket Genuine leather JanSport label and trims Ergonomic S-curve shoulder straps, sternum straps, and adjustable webbing side compression